A STUDY OF THE TENSILE STRENGTH OF THE MENISCI OF THE KNEE

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Abstract
The tensile strength was studied in 32 fresh human menisci -carefully removed from amputated limbs. The menisci were tested to failure under direct tension. In 27 joints the lateral meniscus was the stronger, in 1 joint both menisci were of the same strength, and in 4-joints the medial meniscus was the stronger. In the 1st group 13 showed more than 20 lbs. difference and in 3 the lateral menisci supported over 45 lbs. more than the medial ones. The avg. breaking load in this group was about 56 lbs. for the medial menisci and 74 lbs. for the lateral ones. In 21 of the 32 medial menisci and in 24 of the 28 lateral menisci the fractures were either spiral or oblique. The tendency for spiral fracture was more apparent in the lateral menisci. In the dog the lateral menisci were stronger in 13 of the 20 joints, the medial in 5 joints, and they were of equal strength in 2 joints. The fractures were usually transverse. The data are summarized in tabular form and the clinical implications are discussed briefly.

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